Marvin



ll'iviTn STATES aTnNT Trice.

MARVIN O. ROYCE, OF SOMERVILLE, MASSACHUSETTS.

LOCK.

SPECIFICATION forming part of Letters Patent No. 489,692, dated January10,- 189B.

Appinaion ined Apni 29. 1892.

.To @ZZ whom it may concern,.-

Be it known that I, MARVIN O. ROYCE, of Somerville, county of Middlesex,State of Massachusetts, have invented an Improvement in Locks, of whichthe following description, in connection with the accompanying drawings,is a specification, like letters and tigures on the drawingsrepresenting like parts.

This invention has for its object the production of an improved lockwhich maybe readily applied to a door without theemploy ment of skilledlabor, the mechanism of the said lock being very simple and durable.

In accordance therewith my invention consists in a lock having a faceplate and attached tube, a catch having a projection at its inner end,and a fixed plug fitted into the outer end of the tube, combined with arotating' hub for the knob spindle and supported by said plug, a crankhaving a roller or other stud to cooperate with the projection, and alink connecting the hub and crank, and a spring, to operate,substantially as will be described, whereby the hub may be turned ineither direction to carry the pivots of the link off from their centerlines and turn the crank to draw the catch back and compress the spring.Also in the combination with a face-plate, a connected tube having akeyhole, and a bolt within said tube, of a key and mechanismintei-mediate said key and bolt, including a slotted locking-plate, tobe engaged and actuated by said key to slide the said bolt within saidtube, substantially as Will be described.

Other features of my invention will be hereinafter described audparticularly pointed out in the claim.

Figure l of the drawings represents in longitudinal section the frontplate and tubes of a lock leiinbodying my invention, the catch and boltparts thereof, and their co-operating devices, being represented inelevation. Fig. 2, is a vieu7 of the catch part of the lock, the outsidetube being in section in the line w Fig. l, thus showing in elevationthe catch mechanism Within the tube. Fig. 3, is a like View showing thebolt tube and its interior mechanism. Fig. 4, is a detail showing partof the catch portion, the cap plate used to support the hub beingremoved to better show the hub and its connecting link and crank device,the full and dotted lines in said ligure Serial No. 431.115. (No model.)

showing the parts in their extreme positions. Fig. 5, is an enlargedsection in the line fy, Fig. 3. Fig. 6, is a detail showing the bit o fthe key in side elevation. Fig. 7, is a detail showing the latchdetached.

The face a, of the lock may be of any suitable shape or material. Thecatch b and its connecting devices to be described, are contained in atube c. The bolt CZ and its actuating devices are contained in a tubedx.

Referring to the catch part of the lock it Will be seen that the catchb, having its face beveled in usual manner has a shank ZJ provided Withashoulder Wsuitably shaped to be engaged by a roller or other stud 2forming part of a crank e pivoted at c on a plug e2 preferably of castmetal and circular in shape and confined in the tube c by screw e3 shownin Fig. 2. This plug is represented as coinposed of two parts, one part,as e4, being confined to the other part by a suitable screw, as e5; thepart e4 having a suit-able hole to embrace one end of a hub e6 having asquare or other hole to be entered by the usual knob spindle, the otherpart of the plug receiving the opposite end of the hub and confining itin place as best represented in Figs. l aud 2, Fig. 4, showing the plugwith the pait eternitted. The hub e6 is provided with Aa suitable studor projection 3 which receives upon it a link f, the opposite end ofwhich embraces a pin or projectiona of the crank e. It will be obviousthat these pins or projections 3, 4i may either be fixed in the link orbe fixed respectively in the crank and hub. The plug referred to has apin or projection 5 which serves to hold in Working position the spiralspring 6, shown in Figs. l and 2, one end 0f said spring acting againstthe plug, and the other against the shoulder forming part of the catch.The shape of the plug externally is suoli as to substantially lill thetube o, and the hub e is of such length that its ends will not rubagainst the interior of the tube.

The parts referred to as contained in the tube c, are assembled togethersubstantially as shown and may be removed bodily from the tube c bytaking out the screw e3.

It Will be understood in operation that the spring 6 acts to keep thelcatch out as represented in Figs. l and 2. The projection hzof thecatch acting en the stud 2 holds the crank e in its full line positionrepresented in Figs. 1,' 2 and 3, andthe link acting on the hub holdsthe pin 3 on its front center so that the spindle and knob are held bythe force of the spring to prevent any shaking of the knob. When thedoor is being closed and the catch meets the usualA striker-plate, thecatch is pushed into the tube c overcoming the pressure of the spring,the projection b2 then retiring from the stud 2, the spring, however,reversing the movement of the latter as soon as the catch enters thehole in the usual striker-plate. To retract the bolt, the door beingshut, the operator will turn the usual knob and thereby turn the hub,causing the stud 3 to be moved and with it the link f, putting them intothe dotted line position shown in Fig. 4. The movement of the hub may bein either direction so as to carry the stud 3 from its normal position,on the center, either Way, and draw back the lever e, and as soon as theoperator releases the knob the spring 6 acts quickly to spring thelever, link, and hub back into their normal position, Fig. 1. The tube cwill preferably be threaded into the face-plate a, by a thread more orless fine, so that by a half rotation of the tube the catch may beadapted to a right or left-hand lock.

Referring now to the bolt part of the lock, I have represented the boltd as made tubular with its outer end closed, such bolt having greatstrength coupled with lightness. The bolt has extended rearwardly fromit aspring d', said spring entering and fitting a longitudinal groove ina cage This spring is provided with a locking-plate d3 having suitableprojections 7 to enter suitable notches 8, there being a double set ofnotches so that when the projections are in one set of notches the boltwill be out in locking position, and when in the other set of notches,as represented in the drawings, the bolt will be unlocked. Thislocking-plate, as represented, has one hole 9 adapted to be entered by aprojection as 10 of the key 7c, partially shown in Fig. 6. In practice,however, it will be understood that this locking-plate may have one ormore holes located in any particular part or parts of it, and of anydesired configuration so that the movement of the bolt will require aparticular shaped key. The cage cl2 to add to the difficulty of pickingthe lock may and will preferably be provided with suitable Wards locatedat g, g', the said wards having their edges nearest to the center ofmotion of the key cut away to correspond with the outline of the key.These wards may, if desired, be stamped out of sheet metal and suitablyattached to the cage, or they may be confined to or made part of thecage in any usual or suitable manner.

In operation let it be supposed that the key 7c has been inserted intothe usual key hole 7o and its bit has been turned upwardly in thedirection of the arrow Fig. 5, passing the ward g. In this condition theshoulders 12 of the key will act upon the lockingplate and theprojection 10 will enter the notch in the locking-plate. In its furthermovement the shoulders lift the locking-plate sufficiently to remove theprojection 7 from the notch 8 in the cage, and thereafter the projection10 of the key acts to push the locking-plate the spring and the boltwith it to the left viewing Figs. l. and 5, looking the bolt; thelocking-plate in its final movement being left in such position that itsprojection 7 will enter the second set of notches S, or the notchesshown as vacant in the drawings. The motion of the key will be continuedpast the wards g of the keyhole when it may be drawn out. In thiscondition the bolt is locked and is held in its locked position by theshoulder of the locking-plate in that set of notches nearest the platea.

This invention is not limited to the exact construction shown for themechanism intermediate the key and the bolt d to slide the latter withinthe tube, as the said mechanism, shown as a plate and a spring, may bevariously modied.

The use of thespring as a support or carrier for the locking-plateenables the lockingplate to lie comparatively close to the center ofmotion of the key, so that a short bitted key may engage the plate andkeep hold of it during the locking and unlocking movement, the springenabling the bit of the key to be shorter than would be possible werethe spring to be omitted, and with a short bit I can get a long movementof the bolt.

IOO

Having described my invention, what I claim as new and desire to secureby Letters Patent, isz- 1. In a lock, a face plate, and attached tube, acatch having a projection as b2 at its inner end, and a fixed plugfitted into the outer end of the tube, combined with a hub for the knobspindle supported by said plug, a crank having a roller or other stud toco-operate with the projection b2, and a link connecting the hub andcrank, and a spring, the combination being and operating substantiallyas described, whereby the hub may be turned in either direction to carrythe pivots of the link of from their center lines and turn the crank todraw the catch back and compress the spring, substantially as described.

2. The tube, the catch therein having a shank provided. with a shoulderb2; and a spring supported independently of and to normally keep thecatch out; combined with a freely pivoted crank provided with a stud tomove over the face of and actuate said shoulder b2; a link, and a hubfor the knob spindle, the link being pivoted to said crank and connectedwith the said hub at the side of its periphery nearest the said crank,the hub be ing adapted to be partially rotated in either direction toretract the catch, substantially as described.

3. A face plate, a connected tube having a keyhole, and a bolt withinsaid tube, combined With a key, and mechanism intermediate said key andbolt, including a slotted locking plate, to be engaged and actuated bysaid key to slide the said bolt Within said tube, substantially asdescribed.

4. The tube e, its contained bolt and connected spring, a locking platecarried by the spring and provided with a projection, combined with acage having a notch to co-operate with said projection, the said lookingplate being adapted to be lifted to disengage said projection and notch,and thereafter be moved longitudinally by means of a key, substantiallyas described.

5. The tube e, its contained bolt, spring, and

In testimony Whereot l have signed my name to this specification in thepresence of two snbscribin g Witnesses.

MARVIN O. ROYCE.

Witnesses:

GEO. W. GREGORY, FRANCES M. NOBLE.

